Header for steam-generators.



y A. s. HAY; HEADER POR STEAM GENERATORS.

y APPLICATION FILED APR. 14, 1913.

Patented Feb. 24, 1914.

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UNTE TESY PATENT FFQE.

ALEXANDER STANLEY HAY, OIF PHILADELPHIA, PENNSYLVANIA.

'HEADER FOB STEAM-GENERATORS.

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Application filed April 14, 1913. Serial No. 760,854.

1/ '0 all whom it may concern:

Be it known that I, ALEXANDER. S. HAY, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Headers for Steam-Generators, of which the following is a specilication, reference being had to the accompanying drawings.

My invention relates to steam generators of the water tube class, in whichY a plurality of tubes, usually arranged in banks, are received within a header. It is customary to provide the side of the header, opposite that at which the tubes are received, with openings in order that access may be had to the tubes for cleaning or repairs.

My invention relates to means for se curely closing these openings of the header and includes means whereby a plurality of such openings may be simultaneously closed and secured or opened so as to expose an entire row of tubes.

More particularly it relates to providing` these openings with an internal seat formed preferably by an internal flare forming a conical or tapered seat, within which is seated a correspondingly tapered lid, introduced through a suitable hand hole into the interior of the header and then secured in place by bolts attaching said lids to an exterior' attachment piece.

It is a` further element of importance in my invention, that a number of these lids may be formed integrally with or attached to, a single fiat plate or rod so that a. whole row of openings may be opened or closed simultaneously by the manipulation of the fastening devices provided for the plate or rod to which the row of lids is attached.

1n the accompanying drawings, Figure l, is a vertical section of a header embodying my invention. Fig. Il, is an end eleva-` tion of the same. Fig. III, is a sectional view of an alternative construction of the cap plate.

The header 1, is shown of a usual construction, rcceiving on one side the tubes 2, which are appropriately fastened therein. A tube 3, is provided at one end of the header, and a hand hole 1, at the other end. rlShis hand hole is provided with interiorly flaring sides 5, in which a tapered lid G, is seated and secured, being attached by means of a bolt 7, with anut 8, to a bridge 9, on

Specification of Letters Patent.

Patented Feb. 24, 1914..

the outer side of the header, as clearly seen 1n Fig. I. Opposite to each of the tubes is an opening 10, in the side of the header. lhese openings are similarly provided with inwardly flaring edges capable of receiving the lids 11, a series of which are united by the lid plate 12. rilhey may either be formed integrally with the lid plate, or as separate pieces attached thereto. For the sake of lightness, the lids and lid plate may be made as a single casting, forging or stamp ing, formed as shown in Fig. III.

The lid plate with its series ofilids is inserted within the header through the hand hole and closes simultaneously as4 many of the apertures as it has lids provided upon its surface. It is secured in place by means of the bolts 15, with nuts 16, screwing down upon a bridge 17, on the outside of the header. An advantage resulting from this construction is that instead of the necessity of a bolt and nut for each lid, two or more bolts suiiice to close an entire row of openings.

It will be understood that the shape and construction of the header may alter according to convenience, since my invention is applicable to steam generators of many different types.

It is characteristic of my invention and one of the advantages thereof, that by reason of the interior iiaring of the edge of the aperture, and the corresponding formation of the cap or plug, the interior pressure whether of steam or water within the header only tends to more firmly seat the cap and close the aperture.

Having thus described my invention, l claim:

1. A header for a steam generator receiving water tubes and provided with corresponding openings opposite said water tubes, said openings being provided with interior lid seats, means for simultaneously opening and closing a. plurality of said openings, consisting of a series of lids adapted to be seated one within each opening from within, said series of lids being Vattached to a common lid plate; and securing means whereby said lid plate is Vsecured in place from without, with all the lids which it carries seated within their openings, substantially as described.

2, A header for a steam generator receiving water tubes and provided with corresponding openings opposite said Water tubes, Which it carries seated Within their opensaid openings being provided with inted ings, substantially as described.

riorly flaring sides, means for simultane- In testimony whereof, I have hereunto ously openinf and closing a plurality of said signed my name at Philadelphia, Pennsyl- 5 openings, consisting of a series of lids Vania, this tenth day of April 1913.

tapered to be lseated one Within each open- T ing from Within, Said Series of nds being ALEXANDER STANLEA HAY' attached to a common lid plate; and secur- Witnesses: ing means whereby said lid plate is secured JAMES H. BELL, 10 in place from Without With all of the lids E. L. FULLERTON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patentl, Washington, D. C.

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